22221151 has 8 divisors (see below), whose sum is σ = 23626080. Its totient is φ = 20852832.

The previous prime is 22221109. The next prime is 22221161. The reversal of 22221151 is 15112222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22221151 - 2¹¹ = 22219103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7896 + ... + 10333.

It is an arithmetic number, because the mean of its divisors is an integer number (2953260).

Almost surely, 2^22221151 is an apocalyptic number.

22221151 is a deficient number, since it is larger than the sum of its proper divisors (1404929).

22221151 is a wasteful number, since it uses less digits than its factorization.

22221151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305.

The product of its digits is 80, while the sum is 16.

The square root of 22221151 is about 4713.9315862664. The cubic root of 22221151 is about 281.1397041756.

Adding to 22221151 its reverse (15112222), we get a palindrome (37333373).

The spelling of 22221151 in words is "twenty-two million, two hundred twenty-one thousand, one hundred fifty-one".